I just read Article 334 on NM cable and it's starting to become clear to me that NM cable or more properly identified as NM-B is only suitable for interior wiring. It specifically mentions "in" buildings or structures. Not even suitable for damp location. Dry locations only. I'm not willing to say that the inside of LFNC is dry. Might not be wet but for sure damp. NM cable is a no no for use outside the building. There I said it. So let it be written- So let it be done.
